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Note 10 - Long-term Debt - Long-term Debt Instruments (Details) (Parentheticals) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Revolving Credit [Member] |  |
Effective interest rate | 3.90% | 4.00%
Term Loan [Member] |  |
Effective interest rate | 3.80% | 3.70%
Debt instrument, periodic payment, principal | $ 102 | $ 102
Promissory Note Dated August 2, 2013 [Member] |  |
Effective interest rate | 2.99% | 2.99%
Debt instrument, periodic payment, principal | $ 125 | $ 125
Capital Lease Obligations [Member] |  |
Effective interest rate | 6.00% | 6.00%

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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Balance Type: | na
Period Type: | instant

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- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Balance Type: | debit
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- Details
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- Details
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- Details
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- Details
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